Problem 1: Dwayne took his car to have the timing belt replaced. If the belt costs $150 and the mechanic charges $85 per hour for his labor, write an equation that relates Dwayne's total cost(t) to the number of hours (h) the mechanic works. 1. What is the beginning value or b or y-intercept?

2. What is the rate per hour or slope or m?

3. Put the two values in the equation y=

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.

Joline is solving the equation 0=x^2-5x-4 using the quadratic formula which value is the negative real number solution to her quadratic equation round to the nearest tenth if necessary